security: widen API-key auth to content/AI routes (v0.27.0)

Convert requireSession -> requireSessionOrApiKey across recipes,
collections, meal-plans, shopping-lists, pantry, feed, and ai/*
(52 routes) so API keys work end-to-end, not just for the handful of
endpoints that supported them before. Scope was explicitly confirmed
per-resource-family with the user before any file was touched.

Left session-cookie-only, deliberately: users/me*, ai-keys/*,
webhooks/*, conversations/*, notifications/*, push/subscribe, admin/*
— account/credential-adjacent surface that shouldn't widen without a
separate, explicit decision.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/app/api/v1/pantry/[id]/route.ts

@@ -1,12 +1,12 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
 import { db, pantryItems, eq, and } from "@epicure/db";
-import { requireSession } from "@/lib/api-auth";
+import { requireSessionOrApiKey } from "@/lib/api-auth";
 
 type Params = { params: Promise<{ id: string }> };
 
 export async function PUT(req: NextRequest, { params }: Params) {
-  const { session, response } = await requireSession();
+  const { session, response } = await requireSessionOrApiKey(req);
   if (response) return response;
   const { id } = await params;
 
@@ -33,8 +33,8 @@ export async function PUT(req: NextRequest, { params }: Params) {
   return NextResponse.json({ updated: true });
 }
 
-export async function DELETE(_req: NextRequest, { params }: Params) {
-  const { session, response } = await requireSession();
+export async function DELETE(req: NextRequest, { params }: Params) {
+  const { session, response } = await requireSessionOrApiKey(req);
   if (response) return response;
   const { id } = await params;
 

apps/web/app/api/v1/pantry/bulk/route.ts

@@ -1,7 +1,7 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
 import { db, pantryItems, eq } from "@epicure/db";
-import { requireSession } from "@/lib/api-auth";
+import { requireSessionOrApiKey } from "@/lib/api-auth";
 
 const Schema = z.object({
   items: z.array(z.object({
@@ -12,7 +12,7 @@ const Schema = z.object({
 });
 
 export async function POST(req: NextRequest) {
-  const { session, response } = await requireSession();
+  const { session, response } = await requireSessionOrApiKey(req);
   if (response) return response;
 
   const body = await req.json() as unknown;

apps/web/app/api/v1/pantry/route.ts

@@ -1,7 +1,7 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
 import { db, pantryItems, eq, desc, sql } from "@epicure/db";
-import { requireSession } from "@/lib/api-auth";
+import { requireSessionOrApiKey } from "@/lib/api-auth";
 
 const Schema = z.object({
   rawName: z.string().min(1).max(200),
@@ -11,7 +11,7 @@ const Schema = z.object({
 });
 
 export async function GET(req: NextRequest) {
-  const { session, response } = await requireSession();
+  const { session, response } = await requireSessionOrApiKey(req);
   if (response) return response;
 
   const { searchParams } = req.nextUrl;
@@ -39,7 +39,7 @@ export async function GET(req: NextRequest) {
 }
 
 export async function POST(req: NextRequest) {
-  const { session, response } = await requireSession();
+  const { session, response } = await requireSessionOrApiKey(req);
   if (response) return response;
 
   const body = await req.json() as unknown;

apps/web/app/api/v1/pantry/scan/barcode/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
-import { requireSession } from "@/lib/api-auth";
+import { requireSessionOrApiKey } from "@/lib/api-auth";
 import { applyRateLimit } from "@/lib/rate-limit";
 
 const Schema = z.object({
@@ -30,7 +30,7 @@ function extractUnit(quantity: string | undefined): string | undefined {
 }
 
 export async function POST(req: NextRequest) {
-  const { session, response } = await requireSession();
+  const { session, response } = await requireSessionOrApiKey(req);
   if (response) return response;
 
   const body = await req.json() as unknown;

apps/web/app/api/v1/pantry/scan/photo/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
-import { requireSession } from "@/lib/api-auth";
+import { requireSessionOrApiKey } from "@/lib/api-auth";
 import { applyRateLimit } from "@/lib/rate-limit";
 import { withAiQuota, resolveAiConfigOrError } from "@/lib/ai/ai-error";
 import { getModelConfigForUseCase } from "@/lib/ai/resolve-user-key";
@@ -12,7 +12,7 @@ const Schema = z.object({
 });
 
 export async function POST(req: NextRequest) {
-  const { session, response } = await requireSession();
+  const { session, response } = await requireSessionOrApiKey(req);
   if (response) return response;
 
   const body = await req.json() as unknown;